Here are five easy words/phrases you can learn from this video. Watch the subs for more vocabulary :)
너 때문에 (neo ddaemun-eh) - because of you
내 앞에서 (nae ap-eseo) - in front of me
제발 (jebal) - please (more like begging lol)
여기저기 (yeogijeogi) - here and there
미소 (miso) - smile
Any more questions feel free to ask~

I don't understand what the huge problem was with this MV and why the members felt like they had to apologise for it...personally, I really liked the song. Yes, it was sexy but I don't think it was anything worse than other sexy concept MVs